OB 52, 53 Study guide Flashcards
- Caudal regression syndrome, found in patients with what?
Diabetes
- What term defines the appearance of overlapping skull bones indicate fetal death?
spaldings sign
- What would fetal hydrops appear like under ultrasound, sonographic findings?
scalp edema, plueral effusion, percardial effusion, ascites, polyhydraminos, and thickened placenta
- If hydrops is cause by tachycardia, what is the fetal heart rate?
over 170 beats per minute
200-240 BPM
- If a pregnant woman has a baby, patient of size, what increase incidence is there?
Neural tube defects
- What is caudal regression syndrome?
Lack of development of the caudal spine and cord that may occur in the fetus of a diabetic mother
- Skeletal and central nervous system anomalies in infants of diabetes mother including all of the following?
neural tube defects
anencephaly
caudal regression syndrome
- When is it considered premature labor?
Onset of labor before 37 weeks
- Monochorionic twins, which will develop without a heart or upper body?
Acardica twin
- Which one of the following statements about twin to twin transfusion is true?
the arterial blood of the one twin is pumped into the venous system of the other twin
- What is poly-oli sequence?
Poly in one of the twins sac and oligo (small twin) in the other twins sac
- What is another name for poly-oli sequence?
stuck-twin syndrome
- Development of conjoined twins occurs how many days after conception?
13 days
- Stuck twin syndrome is usually observed in what weeks?
16-26 weeks
- Dia-dia, demonstrates what sonographic findings?
two gestational sac and two placentas
- Which one of the following is demonstration of one fertilized egg occurs 4-8 days after fertilization?
one chorion and two amnions
- Predictors of discordant in the growth of twins?
a difference in fetal weight greater than 20%
a difference in abdominal circumference of 20 mm or greater
a difference in femur length of 5 mm or greater
- Most frequency causes of nonimmune hydrops?
Cardiovascular lesions
- What are the advantages of chorionic villa samplings?
it is preformed in the first trimester
the results on available in 1 week
early result allow for more options for the parents
- Cordocentesis is more commonly used for what procedure?
chromosomes are analyzed
guidance for transfusion to treat isoimuniztion
- Amniocentesis may be used for all the following except?
prediction of cardiac anomalies
- Why do we perform amniocentisis?
to relieve polyhydraminos, to predict Rh isoimmunization, to document fetal lung maturity, detect chromosomal abnormality or biochemical disorder
- Twins that arise from two separately fertilized ova are what type of twins?
dizygotic
- Sonographic findings that suggest chromosomal anomalies include?
hand clenching
thickened nuchal fold
omphalocele
- AFP is found in all of the following except?
Brain
- High levels of AFP indicate what?
anencephaly
open spina bifida
gastroschisis
- Quad screen evaluates all except?
Evaluates: AFP, hcG, unconjugated estriol, dimeric inhibin not fetal lung maturity
- Abnormality in a number of chromosomes?
Aneuploidy
- Early noninvasive means of assess the means of aneuploidy?
Nucheal Translucency
- Following sono findings of thickening nuchal, shortened femurs, cardiac anomalies, hydro, what do we look for?
trisomy 21
- Sonographic findings of cranial anomalies, choroid plexus cyst, facial abnormalities, and rocker bottom feet?
trisomy 18
- Holoproscencephaly and proboscis are find in what type of fetus?
trisomy 13
- Secondary to pregnancy include hypertension, coma, seizure, 2nd and 3rd trimester represent what?
eclampsia
- Large cystic hygroma, hydrops, coartation (arch/ascending, split, b/c of trauma) of the aorta, may be seen in a fetus with what condition?
Turners syndrome
- Pregnancy associated with PAP A levels, what do they do?
increase through out pregnancy
- AFP produced early in gestation by what structure?
Yolk sac
- Common reason for an elevated MSAFP is what?
incorrect dates
- Most common anepolidy condition is what?
Downs syndrome
- Optimal collect sight in amnio includes all except? (Parameters)
away from the fetus
away from the umbilical cord
away from the central portion of the placenta
- MSAFP levels increase with advanced maternal age and peak at what gestational age?
15-18 weeks
- Free Beta HCG can be access in 1st trim to evaluate what condition?
down syndrome
- After amnio, sonographer should document what?
fetal cardiac activity
- Continuous monitor after amnio, what can it cause?
Oligo
- Fetal death after reach certain growth can’t be reabsorbed is called?
Fetus papyraceus
- Low AFP levels have been found in this condition? One more common than other
fetus younger than expected
- What is the diagram of the chromosomes called?
Karaotyping
- Abnormal NT increase fetal risk for all except?
Is a risk for: trisomies 13, 18, & 21 & structural defects such as: cardiac diaphragmatic renal ABD wall (MW pg 1198)
- Which one is not associated with Turners?
Taller than average stature?????
Is associated: cystic hygroma heart defects hydrops renal anomalies
- Which is included in 1st trim maternal serum screening?
a NT measurement
- Conjoined twins. 5 question! 5 most common types
joined at thorax thoracopagus joined at anterior wall omphalopagus joined at cranium craniopagus joined at ischial region pygopagus joined at buttock region ischiopagus
